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authorStephen Warren <swarren@nvidia.com>2012-04-06 01:54:53 +0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-04-06 17:17:45 +0400
commitef280d3907cea21b6093802398bbe4193e221a64 (patch)
tree77c78952531a4cdbc3732ccde794821976bc8cdb /sound/soc/tegra/tegra20_das.c
parent5fa87d34846e347b62bebf40edf51167e7ffb081 (diff)
downloadlinux-ef280d3907cea21b6093802398bbe4193e221a64.tar.xz
ASoC: tegra: rename Tegra20-specific driver files
Rename these files so they include a specific hardware version in their filenames. The contents is only touched minimally so that git's rename tracking operates correctly; renaming all symbols in the files results in a diff so large that the rename detection fails. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/tegra/tegra20_das.c')
-rw-r--r--sound/soc/tegra/tegra20_das.c261
1 files changed, 261 insertions, 0 deletions
diff --git a/sound/soc/tegra/tegra20_das.c b/sound/soc/tegra/tegra20_das.c
new file mode 100644
index 000000000000..b5e369820cb3
--- /dev/null
+++ b/sound/soc/tegra/tegra20_das.c
@@ -0,0 +1,261 @@
+/*
+ * tegra20_das.c - Tegra20 DAS driver
+ *
+ * Author: Stephen Warren <swarren@nvidia.com>
+ * Copyright (C) 2010 - NVIDIA, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/debugfs.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/seq_file.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <mach/iomap.h>
+#include <sound/soc.h>
+#include "tegra20_das.h"
+
+#define DRV_NAME "tegra-das"
+
+static struct tegra_das *das;
+
+static inline void tegra_das_write(u32 reg, u32 val)
+{
+ __raw_writel(val, das->regs + reg);
+}
+
+static inline u32 tegra_das_read(u32 reg)
+{
+ return __raw_readl(das->regs + reg);
+}
+
+int tegra_das_connect_dap_to_dac(int dap, int dac)
+{
+ u32 addr;
+ u32 reg;
+
+ if (!das)
+ return -ENODEV;
+
+ addr = TEGRA_DAS_DAP_CTRL_SEL +
+ (dap * TEGRA_DAS_DAP_CTRL_SEL_STRIDE);
+ reg = dac << TEGRA_DAS_DAP_CTRL_SEL_DAP_CTRL_SEL_P;
+
+ tegra_das_write(addr, reg);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(tegra_das_connect_dap_to_dac);
+
+int tegra_das_connect_dap_to_dap(int dap, int otherdap, int master,
+ int sdata1rx, int sdata2rx)
+{
+ u32 addr;
+ u32 reg;
+
+ if (!das)
+ return -ENODEV;
+
+ addr = TEGRA_DAS_DAP_CTRL_SEL +
+ (dap * TEGRA_DAS_DAP_CTRL_SEL_STRIDE);
+ reg = otherdap << TEGRA_DAS_DAP_CTRL_SEL_DAP_CTRL_SEL_P |
+ !!sdata2rx << TEGRA_DAS_DAP_CTRL_SEL_DAP_SDATA2_TX_RX_P |
+ !!sdata1rx << TEGRA_DAS_DAP_CTRL_SEL_DAP_SDATA1_TX_RX_P |
+ !!master << TEGRA_DAS_DAP_CTRL_SEL_DAP_MS_SEL_P;
+
+ tegra_das_write(addr, reg);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(tegra_das_connect_dap_to_dap);
+
+int tegra_das_connect_dac_to_dap(int dac, int dap)
+{
+ u32 addr;
+ u32 reg;
+
+ if (!das)
+ return -ENODEV;
+
+ addr = TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL +
+ (dac * TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_STRIDE);
+ reg = dap << TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_CLK_SEL_P |
+ dap << TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA1_SEL_P |
+ dap << TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA2_SEL_P;
+
+ tegra_das_write(addr, reg);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(tegra_das_connect_dac_to_dap);
+
+#ifdef CONFIG_DEBUG_FS
+static int tegra_das_show(struct seq_file *s, void *unused)
+{
+ int i;
+ u32 addr;
+ u32 reg;
+
+ for (i = 0; i < TEGRA_DAS_DAP_CTRL_SEL_COUNT; i++) {
+ addr = TEGRA_DAS_DAP_CTRL_SEL +
+ (i * TEGRA_DAS_DAP_CTRL_SEL_STRIDE);
+ reg = tegra_das_read(addr);
+ seq_printf(s, "TEGRA_DAS_DAP_CTRL_SEL[%d] = %08x\n", i, reg);
+ }
+
+ for (i = 0; i < TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_COUNT; i++) {
+ addr = TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL +
+ (i * TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_STRIDE);
+ reg = tegra_das_read(addr);
+ seq_printf(s, "TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL[%d] = %08x\n",
+ i, reg);
+ }
+
+ return 0;
+}
+
+static int tegra_das_debug_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, tegra_das_show, inode->i_private);
+}
+
+static const struct file_operations tegra_das_debug_fops = {
+ .open = tegra_das_debug_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void tegra_das_debug_add(struct tegra_das *das)
+{
+ das->debug = debugfs_create_file(DRV_NAME, S_IRUGO,
+ snd_soc_debugfs_root, das,
+ &tegra_das_debug_fops);
+}
+
+static void tegra_das_debug_remove(struct tegra_das *das)
+{
+ if (das->debug)
+ debugfs_remove(das->debug);
+}
+#else
+static inline void tegra_das_debug_add(struct tegra_das *das)
+{
+}
+
+static inline void tegra_das_debug_remove(struct tegra_das *das)
+{
+}
+#endif
+
+static int __devinit tegra_das_probe(struct platform_device *pdev)
+{
+ struct resource *res, *region;
+ int ret = 0;
+
+ if (das)
+ return -ENODEV;
+
+ das = devm_kzalloc(&pdev->dev, sizeof(struct tegra_das), GFP_KERNEL);
+ if (!das) {
+ dev_err(&pdev->dev, "Can't allocate tegra_das\n");
+ ret = -ENOMEM;
+ goto err;
+ }
+ das->dev = &pdev->dev;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "No memory resource\n");
+ ret = -ENODEV;
+ goto err;
+ }
+
+ region = devm_request_mem_region(&pdev->dev, res->start,
+ resource_size(res), pdev->name);
+ if (!region) {
+ dev_err(&pdev->dev, "Memory region already claimed\n");
+ ret = -EBUSY;
+ goto err;
+ }
+
+ das->regs = devm_ioremap(&pdev->dev, res->start, resource_size(res));
+ if (!das->regs) {
+ dev_err(&pdev->dev, "ioremap failed\n");
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ ret = tegra_das_connect_dap_to_dac(TEGRA_DAS_DAP_ID_1,
+ TEGRA_DAS_DAP_SEL_DAC1);
+ if (ret) {
+ dev_err(&pdev->dev, "Can't set up DAS DAP connection\n");
+ goto err;
+ }
+ ret = tegra_das_connect_dac_to_dap(TEGRA_DAS_DAC_ID_1,
+ TEGRA_DAS_DAC_SEL_DAP1);
+ if (ret) {
+ dev_err(&pdev->dev, "Can't set up DAS DAC connection\n");
+ goto err;
+ }
+
+ tegra_das_debug_add(das);
+
+ platform_set_drvdata(pdev, das);
+
+ return 0;
+
+err:
+ das = NULL;
+ return ret;
+}
+
+static int __devexit tegra_das_remove(struct platform_device *pdev)
+{
+ if (!das)
+ return -ENODEV;
+
+ tegra_das_debug_remove(das);
+
+ das = NULL;
+
+ return 0;
+}
+
+static const struct of_device_id tegra_das_of_match[] __devinitconst = {
+ { .compatible = "nvidia,tegra20-das", },
+ {},
+};
+
+static struct platform_driver tegra_das_driver = {
+ .probe = tegra_das_probe,
+ .remove = __devexit_p(tegra_das_remove),
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = tegra_das_of_match,
+ },
+};
+module_platform_driver(tegra_das_driver);
+
+MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
+MODULE_DESCRIPTION("Tegra DAS driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);
+MODULE_DEVICE_TABLE(of, tegra_das_of_match);